郭雅琼,马进荣,邹国良.广西万尾岛金滩沿岸输沙计算与分析[J].海洋通报,2017,36(4):468-474
广西万尾岛金滩沿岸输沙计算与分析
Computation and analysis of alongshore sediment transport in Golden Beach of Guangxi
投稿时间:2016-05-01  最后修改时间:2016-06-21
DOI:10.11840/j.issn.1001-6392.2017.04.014
中文关键词:  万尾岛  沿岸输沙  CERC 公式  岸滩稳定性
英文关键词:Wanwei Island  alongshore sediment transport  CERC formula  beach stability
基金项目:
作者单位
郭雅琼 南京水利科学研究院港口航道泥沙工程交通行业重点实验室江苏南京210029河海大学港口海岸与近海工程学院江苏南京210098 
马进荣 南京水利科学研究院港口航道泥沙工程交通行业重点实验室江苏南京210029 
邹国良 南京水利科学研究院港口航道泥沙工程交通行业重点实验室江苏南京210029 
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中文摘要:
      依据 CERC 公式,年内代表浪向作用下,广西万尾岛金滩平直岸滩中部泥沙分别向东西两侧净输沙,意味着金滩中部有淘刷趋势而两端有淤积趋势,而实际上岸滩中部滩面长年基本稳定、未有明显侵蚀现象。分析认为公式计算成果反映的输沙特征定性仍然是正确的,岸滩能够维持稳定是因为还存在自海向岸的横向输沙补给沙源。当岸滩并非平直且足够长时,应完整分析纵、横向输沙才能更为合理地反映岸滩泥沙运动特征。
英文摘要:
      Alongshore sediment transport, at the straights beach named as the Golden Beach of Wanwei Island in Guangxi province, is analyzed by CERC formula under annual wave condition. It shows that sediment transport direction is from the middle of the beach to both sides in E-W direction. It implies that the coast beach will erode at the middle while the two sides will silt. But the beach has kept well balance for years. A study is proceeding to explain the phenomena in this paper. The most important reason is that the cross shore sediment transport has just the opposite effect on the beach evolution to alongshore transport. The beach that can be able to maintain stability is due to transverse sediment transportation supplying sand source from the sea to shore. Both longitudinal and cross-shore sediment transport should be analyzed to reflect characteristics of sediment movement on beach reasonably, especially when the beach is not long enough or not straight.
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